Every time my computer goes to sleep or reboots, I’m having to log in twice. There’s an additional issue where after a reboot, my keyboard doesn’t work on the login screen until I wait for the computer to sleep and then wake it up again.
I suspect this is caused by there being two instances of SDDM running somehow, but lack the expertise to look further, hence my forum post.
Hardware Info: https://0x0.st/XUh1.txt
After recently updating and rebooting, the issue of logging in twice is gone. The story gets stranger with the keyboard not working. After plugging the keyboard and mouse differently than before, this time the mouse wasn’t working briefly after boot. It was plugged into my only USB 3.2 port, the rest are USB 3.0. I thought these issues were connected, but I guess not.
Since the part of this issue relevant to Plasma is solved, I’ll mark this thread as solved. If the USB issues persist, I’ll open another thread in the appropriate section.
Never mind! The issue came back! 
Un-marked as solved.